Shoppers on Oxford Street are being warned about a new scam, being used to con them out of their money.
It involves women - normally members of Romanian gangs - fooling people into handing over cash in exchange for worthless metal rings.
Westminster Council wardens say the scam has now become so common they are dealing with several incidents a day.
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Met Constable Thomas Hooper is said to have taken the medium-sized two-tier tin of biscuits from a storage cupboard.
7-year-old George Lockley has Spinal Muscular Atrophy which means he uses a wheelchair and is slowly getting weaker.
The car has around 210bhp and can accelerate from 0-60mph in 5.5 seconds and hit a top speed of 150mph.